The heavy rainfall poses a risk of localized flooding across Western Pennsylvania, particularly in low-lying and flood-prone areas. Residents are advised to remain vigilant, especially during periods of heavy downpours, as flash flooding could occur. The storms may also bring severe weather conditions, including strong winds and lightning, which could disrupt outdoor activities and cause localized damage. Those planning to attend outdoor events, such as the Steelers' preseason game against the Packers on Thursday, should prepare for potential rain and thunderstorms.